package com.xx.expriment2;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;


@EnableConfigurationProperties(CustomProperties.class)
public class Expriment2AutoConfig {
    @Bean
    @ConditionalOnProperty(prefix = "xx.auto", name = "enable", havingValue = "true")
    CommandLineRunner createCustomCommandLineRunner(Environment env){
        return new CustomCommandLineRunner(env);
    }


    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
//    Qualifier的意思是合格者，通过这个标示，表明了哪个实现类才是我们所需要的
    ApplicationEventMulticaster customApplicationEventMulticaster(@Qualifier("asyncTaskExecutor") ThreadPoolTaskExecutor taskExecutor){
        SimpleApplicationEventMulticaster eventMulticaster = new SimpleApplicationEventMulticaster();
        eventMulticaster.setTaskExecutor(taskExecutor);
        return eventMulticaster;
    }

    //    自定义事件
    static class NoticeEvent extends ApplicationEvent{
        private static final Logger logger = LoggerFactory.getLogger(NoticeEvent.class);

        private final  String message;

        public NoticeEvent(String message) {
            super(message);
            this.message = message;
            logger.info("添加事件成功! message: {}",message);
        }

        public String getMessage() {
            return message;
        }
    }

//    自定义事件监听器
    @SuppressWarnings("unused")
    @Component
    static class NoticeListener implements ApplicationListener<NoticeEvent>{
        private static final Logger logger = LoggerFactory.getLogger(NoticeListener.class);

        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent) {
            logger.info("事件监听器获取到NoticeEvent, 睡眠当前线程 3 秒...");
            try{
                Thread.sleep(3000);
            }catch (InterruptedException e){
                e.printStackTrace();
            }
            logger.info("NoticeEvent的message属性是: {}", noticeEvent.getMessage());
        }
    }



}

